Function
A two-letter code that indicates the principal area within the Postal Service that uses or originated the term. Every term entry includes a function.
| Function Codes | ||
| Code | Function | |
| AM | address management | |
| CA | consumer affairs | |
| CO | communications and public affairs | |
| CR | customer relations | |
| DE | delivery | |
| EN | engineering | |
| FA | facilities | |
| FI | finance | |
| GC | general counsel | |
| GR | government relations | |
| GS | ground shipping | |
| HR | human resources (including labor relations) | |
| IN | International mail | |
| IM | Intelligent Mail | |
| IS | Inspection Service | |
| MA | mail acceptance | |
| MP | mail processing and network operations | |
| MS | mailing services | |
| PC | pricing and classification | |
| PT | payment technology | |
| RE | retail sales | |
| RP | retail products and services | |
| SA | sales | |
| SH | shipping services | |
| SM | supply management | |
| SP | strategic planning | |
| SS | special services | |
| ST | stamps and stamp collecting | |
| SU | sustainability | |
| TR | transportation | |
| US | www.usps.com | |